c++读取文件内容并保存到二维数组

每行数据最后需要Tab处理

 

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int spilt_n(string s)//每行以‘\t’来统计有多个子字符串
{
    const char *ch;
    int i,count = 1;
    ch = s.c_str();
    for(i=0;i<s.length()-1;i++)
    {
        if(ch[i]=='\t')count++;
    }
//    cout<<"count:"<<count<<endl;
    return count;
}

int main()
{
    ifstream in;
    ofstream out;

    in.open("D://test.txt",ios::in);
    if(!in)
    {
        cout<<"open file fail!";
    }else cout<<"open file success!"<<endl;

    
    string str[1000][20];//存放数据
    string temp;
    getline(in,temp,'\n');
    int num;
    num = spilt_n(temp);
    in.close();
    in.open("D://test.txt",ios::in);
//    cout<<"num:"<<num<<endl;
    int mid = 0;
    int count =0;
    while(!in.eof())
    {
    //    mid = 0;
        if(mid<num)
        {
            getline(in,str[count][mid++],'\t');
        //    cout<<"count"<<count<<",mid"<<mid<<":"<<str[count][mid++]<<endl;
        }else{
            mid = 0;
            count++;
        }    
    }

//    cout<<str[0]<<endl;
    int i,j;
    for(i=0;i<count;i++)
    {
        for(j=0;j<num;j++)
        {
            cout<<str[i][j]<<"\t";
        }
        cout<<endl;
    }



    in.close();
    return 0;
}